.weixin-tip{
	position: fixed; 
	left:0; 
	top:0; 
	background: rgba(0,0,0,0.8); 
	filter:alpha(opacity=80); 
	width: 100%; 
	height:100%; 
	z-index: 100;
} 

.weixin-tip p {
	text-align: center; 
	margin-top: 10%; 
	padding:0 5%;
}

.weixin-tip p img {
	width: 100%;
}